Results 81 to 90 of about 438,132 (304)
Journal of Applied Clinical Medical Physics, EarlyView.Abstract Purpose This study evaluates a novel cone‐beam computed tomography (CBCT) imaging solution integrated onto a conventional C‐arm linear accelerator (linac) with increased gantry speed. The purpose is to assess the impact of improved imaging hardware and reconstruction algorithms on image quality.
Theodore Arsenault +9 more
wiley +1 more source
Projective invariants of CR-hypersurfaces [PDF]
arXiv, 2010 We study the equivalence problem under projective transformation for CR-hypersurfaces of complex projective space. A complete set of projective differential invariants for analytic hypersurfaces is given. The self-dual strongly C-linearly convex hypersurfaces are characterized.
arxiv
Journal of Applied Clinical Medical Physics, EarlyView.Abstract Purpose The aim of this study was to investigate the influence of the simultaneous multislice acceleration (SMS) technique as well as two‐dimensional (2D) and three‐dimensional (3D) tumor segmentations on radiomics features (RFs) within the parametric maps of cervical cancer, which were computed by intravoxel incoherent motion (IVIM) and ...
Shuangquan Ai +6 more
wiley +1 more source
Projective differential geometry of multidimensional dispersionless integrable hierarchies
Journal of Physics: Conference Series, 2014 10 pages, the text of the talk at PMNP2013 (Gallipoli, Italy, 22-29 June 2013)
L. V. Bogdanov, KONOPELCHENKO, Boris
openaire +4 more sources
Journal of Applied Clinical Medical Physics, EarlyView.Abstract Purpose The Bravos v1.2 control software introduces a ring applicator component type (ACT) with channel length verification to address geometric characteristics and dosimetric discrepancies caused by source positioning inaccuracies. This study aims to commission the ring applicator and investigate the new ring ACT in Bravos 1.2.
Xiuxiu He +4 more
wiley +1 more source
Projective planes, Severi varieties and spheres [PDF]
Surveys in Differential Geometry VIII, Papers in Honor of Calabi,
Lawson, Siu and Uhlenbeck (International Press, Somerville, MA, 2003) 1-27., 2002 A classical result asserts that the complex projective plane modulo complex conjugation is the 4-dimensional sphere. We generalize this result in two directions by considering the projective planes over the normed real division algebras and by considering the complexifications of these four projective planes.
arxiv
Journal of Applied Clinical Medical Physics, EarlyView.Abstract Current radiotherapy practices rely on manual contouring of CT scans, which is time‐consuming, prone to variability, and requires highly trained experts. There is a need for more efficient and consistent contouring methods. This study evaluated the performance of the Varian Ethos AI auto‐contouring tool to assess its potential integration into
Robert N. Finnegan +6 more
wiley +1 more source
On the theory of curved surfaces, and canonical systems in projective differential geometry [PDF]
, 1915 G. M. Green
openalex +2 more sources
The Penrose Transform for Complex Projective Space [PDF]
arXiv, 2008 Various complexes of differential operators are constructed on complex projective space via the Penrose transform, which also computes their cohomology.
arxiv
Journal of Applied Clinical Medical Physics, EarlyView.Abstract Purpose This study quantitatively evaluates bladder changes and their dosimetric impact during the on‐couch adaptive process on a commercial CBCT‐based online adaptive radiotherapy (CT‐gART) platform. Methods Data from 183 fractions of ten patients receiving online ART for pelvic cancers were analyzed retrospectively.
Ingrid Valencia Lozano +7 more
wiley +1 more source